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Novel biomass fixed bed combustion boiler capable of operating continuously

A biomass and fixed bed technology, applied in the field of combustion boilers, can solve the problems of large floor space, complicated operation and low combustion efficiency, and achieve the effect of small floor space, simple operation and compact structure

Active Publication Date: 2018-11-30
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Both of the above two applications adopt the traditional horizontal reciprocating grate structure, which can improve the thermal energy utilization efficiency of materials to a certain extent, but they still have problems such as large footprint, complicated operation and low combustion efficiency.

Method used

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  • Novel biomass fixed bed combustion boiler capable of operating continuously
  • Novel biomass fixed bed combustion boiler capable of operating continuously
  • Novel biomass fixed bed combustion boiler capable of operating continuously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] combine Figure 1-Figure 4 , a novel biomass fixed-bed combustion boiler that can work continuously in this embodiment includes a boiler body 3, the boiler body 3 is composed of a bed and a free space combustion zone, and a fire grate 7 is arranged in the bed, and the fire grate 7. It is divided into an air intake area and an ash discharge area, wherein the air intake area is processed with a blowing hole 706, and an air chamber is provided below it, and an ash discharge chamber is correspondingly provided below the ash discharge area, and an ash discharge port is provided at the bottom of the ash discharge chamber 15. A grid 6 is arranged above the fire grate 7. The grid 6 is used to support the biomass fuel and is connected with the rotary drive mechanism at the bottom of the boiler, and its rotation speed is controlled by the program.

[0042] The biomass material is fed from the upper part of the boiler body 3, and falls on the grille 6 through the evaporation proce...

Embodiment 2

[0044] A new type of biomass fixed-bed combustion boiler that can work continuously in this embodiment is basically the same in structure as in Embodiment 1, the main difference is that the bed in this embodiment is a vertical cylinder, and through a variable cross-section ( figure 1 Inverted cone structure shown in ) transitions to the free space combustion zone, and the side wall of the boiler body 3 corresponding to the variable section is provided with a feed port 2 . Simultaneously, the fire grate 7 of the present embodiment is divided into a plurality of air intake areas and an ash discharge area continuously distributed along the circumferential direction, and the interior of the boiler body 3 is located below the fire grate 7 and is separated from the above air intake area and ash discharge area. Corresponding to different air chambers and ash discharge chambers. The biomass fuel that enters the boiler body 3 through the feed port 2 at the variable cross-section always...

Embodiment 3

[0048] A new type of biomass fixed-bed combustion boiler that can work continuously in this embodiment has a structure basically the same as that in Embodiment 2, the difference mainly lies in: specifically, as image 3 , Figure 4 As shown, the grate 7 of the present embodiment is divided into five areas continuously distributed along the circumferential direction, wherein the I area 701, the II area 702, the III area 703 and the IV area 704 are all air intake areas, and the V area 705 is the ash discharge area. area (the area inside the furnace body below the fire grate 7 is correspondingly divided into the first air chamber, the second air chamber, the third air chamber, the fourth air chamber and the ash discharge chamber), and the feeding port 2 is set in the same area as the I area 701 corresponds to the upper side wall of the boiler body 3, and the rotation direction of the grid 6 is the same as the distribution direction around the above-mentioned I-V zone. The biomas...

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Abstract

The invention discloses a novel biomass fixed bed combustion boiler capable of operating continuously, and belongs to the technical field of combustion boilers. The Novel biomass fixed bed combustionboiler capable of operating continuously comprises a boiler body which is composed of a bed layer and a free space combustion section; the bed layer is mainly composed of a fire grate and a grid; thefire grate is divided into an air feeding zone and an ash discharging zone, the air feeding zone is provided with air flowing holes, an air chamber is arranged below the air flowing holes in a corresponding mode, and an ash discharging chamber is arranged below the ash discharging zone in a corresponding mode; and the grid is arranged above the fire grate and connected with a rotation driving mechanism located at the bottom of the boiler, and the rotation speed of the grid is controlled by the program. According to the novel biomass fixed bed combustion boiler capable of operating continuously, the staying time of biomass fuel in the boiler is controlled through motion of the grid, and continuous boiler operation is ensured. The boiler is compact in overall structure, the combustion efficiency of the biomass fuel can be effectively improved, compared with traditional grate-fired furnaces, the boiler has the outstanding characteristics of being small in occupied area, easy to operate, low in building cost and the like.

Description

technical field [0001] The invention belongs to the technical field of combustion boilers, and more specifically relates to a novel biomass fixed-bed combustion boiler capable of continuous operation. Background technique [0002] Energy has always played an important role in my country's economic development and people's lives. At present, my country's energy consumption demand is growing strongly, the contradiction between supply and demand has further deteriorated, and the task of energy conservation and emission reduction is still arduous. However, the combustion efficiency of coal combustion equipment in our country is relatively low, which produces a large amount of harmful gases and seriously pollutes the environment; existing boilers, drying lines and other equipment that obtain heat in the form of heat exchange use cleaner petroleum (light diesel oil), Although natural gas can meet environmental protection requirements, its high cost has caused huge economic pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23B30/00F23L1/00F23L9/00
CPCF23B30/00F23L1/00F23L9/00
Inventor 郑志敏魏建旭汪洋顾明言
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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